Twannberg Meteorite 936.5 grams. Iron, IIG

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Copyright Photo by Andreas Koppelt.

Andreas writes:

Twannberg Mass #TW611

The Twannberg meteorite is chemically a rare IIG iron and structurally a hexahedrite. Ongoing scientific research shows that the Twannberg meteorite fell 200,000 years ago (+/- 20,000 years). In the absence of a widmannst├Ątten pattern, oxidation is rather moderate and shale is mostly present only on the surface of the pieces; some pieces even showed delicate flowlines and original fusion crust.

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Paul Harris
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